Henry m



(No Model.)

' H. M. COOPER & L. J. KOHL.

BURGLAR ALARM.

No. 347,688. "Patented Aug. 17, 1886.

Q/m tweqoo gmvawliozs I777. Coo/7e r"? IIho/zZ UNITED STATES PATENT OFFICE.

HENRY M. COOPER AND LEA J. KOHL, OF NEW ALBANY, INDIANA, ASSIGNORS TO FRANK A. SEARS AND JOHN T. STEEL, BOTH OF SAME PLACE.

BURGLAR-ALARM.

$PEGKFIUATEQN forming part of Letters Patent No. 347,688, dated August 17, 1886.

Application filed May 7, 1886. Serial No. 201,450. (No model.)

T at whom it may concern: Window-sash in such a manner that upon rais- Be it known that we, HENRY M. COOPER ing the same the lower end of the trigger will and LEA J. KoI-IL, citizens of the United be pressed inwardly, and thereby disengage States, residing at New Albany, in the county the upper end from the plunger D, whereupon of Floyd and State of Indiana, have invented the latter will be forced down upon and excertain new and useful Improvements in Burgplode the cartridge by means of the coiled lar-Ala'rms, of which the following is a specispring E. fication, reference being had therein to the The plunger D at its upper end is provided accompanying drawings. with a slotted lateral extension, D, to be con- 6 10 Our invention relates to certain new and nected to the door by means of the pivoted useful improvements in that classof burglarlink H. By this arrangement, when the door alarms in which a cartridge is used to give is opened,the plunger will be partially related the alarm; and it has for its objects to provide to disengage it from the trigger F, which rests adeviee of simple and cheap construction that in the notch in the same. The upper edge of 6 may be readily attached to the doors and winthe notch in the plunger is partially cutaway (lows of dwellings or apartments, and be so or beveled, in order that the trigger may be arranged that the act of opening the same will easily disengaged therefrom when in use upon cause the cartridge to explode, and thus alarm a door. The impact end of the plunger or exthe occupants. ploder is provided with a lug or teat to effect 7 2c The invention consists in certain novel feaively explode the cartridge.

tures of construction, that will be fully de- Having thus fully described our invention, scribed in the following, and particularly what we claim, and desire to secure by Letters pointed out in the claims. Patent, is-

The above objects we attain by the means 1. In aburglar-alarm, the combination,with 7 2 5 illustrated in the accompanying drawings, in the casing A, provided with attaching means which Figure 1 represents a perspective view and the cartridge-abutment O, of the spring. of our invention applied to a window; Fig. 2, actuated plunger-rod D, arranged concentricthe same applied to a door; Fig; 3, a longially with the cartridge, the spring-trigger F, tudinal sectional view of the device, and Fig. provided with the downwardly extending 8 3o 4 a detail View of a portion of the plungercurved arm F, and adapted to engage in a rod. notch in the said plunger-rod, and the operat- In the drawings, A designates a triangular ingpin G, substantially as herein set forth. or other shaped casing. Upon the upper and 2. In a bu rglar alarm, the combination,with lower ends of this casing perforated ears or the casing A, provided with the abutment O 8 lugs B are formed, for the purpose of attachand suitable attaching means, the springacting the same to the frame or jamb. A peruated plunger-rod D, .passing through the easforated abutment or shelf, 0, is also formed ing and provided with the slotted lateral exupon the lower end of the casing, for the suptension D, and the spring-trigger F, engaging port and reception of the cartridge 0. The. in a notch in the plunger and pivoted to the 9 4o plunger D passes vertically through the cascasing, of the link H, pivoted to the door and ing, and is arranged concentrically with the adapted to rest in the slot in the extension D cartridge 0 upon the shelf directly beneath. when the alarm is set, substantially as herein A coiled spring, E, surrounds this plunger inset forth.

side of the casing, and serves to give the req- In testimony whereof we affix our signatures g 5 uisite force to explode the cartridge. A in presence of two witnesses.

spring-actuated trigger, F, provided with a downwardly-extending curved arm, F, is piv- OPER' oted to a projection or ear formed integral with the casing, and engages in a notch cut in NVitnesses: the plunger D when set. C. D. DAVIS,

G designates a'pin or lug attached to the JOHN C. LEPPELMAN. 

